Load cells come in many different shapes, sizes and capacities and are now the industry standard for all sorts of weighing. It can be a bit of a mine field searching for the 3 axis load cell for your application. I have listed some of the most common found today along with their uses.
Single Point – Single point are probably the cheapest and many popular type on the market today. Due to their price and reliability, they may be found in most varieties of retail scales, counting scales, medical scales, parcel scales and postal scales. This sort of load cell can also be used in platform scales and industrial weighing systems to supply accurate readings irrespective of the position of the load on the platform, reducing manufacturing costs.
Canister Type – Canister type have been around for a long time and are usually the business standard for most high capacity, compression applications. Canister type load cells can be used as single and multi-weighing applications. This sort of cell features a button on the top and bottom side and can be used in compression only. Canister type load cells are used in tank scales, vessel weighing applications, axle weighing scales, truck weighing, vehicle scales and weighbridges. Canister type load cells offer accurate weighing in harsh environments.
Double Ended Shear Beam – For medium to high capacity applications, the double ended shear beam offers several advantages over other designs. This sort is able to rock on its mountings to accommodate any misalignment in mounting surfaces whilst still being retained, this too permits limited movement to enable for thermal expansion and contraction along with lift off protection. This type of cell is additionally available as being a weighing module kit.
Single Ended Shear Beam – Single ended shear beam are commonly found in all types of floor, platform and shipping scales today and offers an excellent solution for most medium capacity weighing applications. Single ended shear cells have the capacity to withstand full capacity side load without any problems which makes them particularly suitable for weighing systems with mixers, blenders and agitators. This type are incredibly durable but could become costly and cumbersome to mount above 10,000kg. This kind of load cell sensor is also obtainable in weighing module form.
Tension Link – The tension link are suitable for applications such as winching, hanging scales, crane weighing scales and lifting systems. This sort of load cell offers superior accuracy at high capacity weighing. This kind of cell has openings at either end to allow for easy connection to shackles, wire rope, D links or other rigging. Tension link load cells give a rugged design for effectiveness against side loading.
Torsion Ring – Torsion ring certainly are a relatively new concept in design and provide an outstanding low profile solution for a wide range of weighing applications. Unlike standard compression load cells, which can readily have problems with off-axis loading problems, torsion rings are loaded by way of a centrally located annular ring. Using a central floating pin to send out load for this ring, optimum load introduction is assured and off-axis loads up to 3 or 4 degrees may be tolerated without loss in performance. Proprietary mounting modules, that offer excellent versatility, are now available for both process weighing applications and platform scales.
Weighing Modules – Weighing module generally includes a load cell with mounting kit. Various kinds of now come supplied as modules but generally single or double ended shear beam and canister type would be the industry standard. Load cell weighing modules are used in tank scales, silo weighing, vessel weighing applications, axle weighing scales, truck weighing, vehicle scales and weighbridges.
Wireless – The suggestions above have one major flaw; they may be connected to devices via cable. One of the primary issues with any weighbridge or floor scale is the possibility of damaged cables. Making use of the ifegti technology, wireless, load cells are being presented and may some day be the industry standard. The above load cells are actually obtainable in wireless format, even if this technology comes at greatly increased price.
S Type – S type have their name from their shape, being the letter ‘S’. S type load cells provides a digital output when found in either tension or compression and provide superior side load rejection. This force sensor has two female threaded fixing points, top and bottom were eye bolts or thread rod ends can be attached. This sort are utilized in crane scales, hanging scales, hoist scales and most tension applications.
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